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Finding the Fourth Proportional to 490,805.73, 736,187.18 and 153,838.69

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Solution

The fourth proportional to 490,805.73, 736,187.18 and 153,838.69 is: 230,751.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,805.73 : 736,187.18 = 153,838.69 : x
  2. Step 2: Convert to fraction form
    490,805.73/736,187.18 = 153,838.69/x
  3. Step 3: Cross multiply
    490,805.73x = 736,187.18 × 153,838.69
  4. Step 4: Simplify right side
    490,805.73x = 113,254,073,762.73
  5. Step 5: Solve for x
    x = 113,254,073,762.73/490,805.73
  6. Step 6: Final answer
    x = 230,751.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.